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Open Help Requests for GM
Help Request Answers
1972 Buick RIVERIA 455CID oil pressure
This one is for the old timers. I put a rb dist and new oil pump in this beauty, remembering to pack the gears etc. primed theoil filter and spun the pump with a drill, because it sat for a while in this guy's garage. Fire it up, no pressure. Put man gauge on ...		 View
1984 Chevrolet Corvette 5.7L brakes locked up
OK people, got one that stumps me. 1984 corvette comes into the shop with a problem with the front brakes slowly locking the car up where the car wont move unitill I release the fluid from the front caliapers. I put brake hoses on but have the same problem. Lo...		 View
1989 Chevrolet Pickup 5.0L Excessive Emissions, Misfire
mutipul discharge of ign random times will fill scope screen with patterns over ranges tac on scope problem not aparent with timing connecter disconected have tried diferent dist (ac delco ) different computer can find no signal to match multipul discharg of i...		 View
1992 Chevrolet Lumina APV 3.1L Torque Converter Clutch
Hi Everyone,This Lumina Came In With No Forward Or Reverse.Customer Wanted Used Trans Installed.Installed Used Trans And Replaced Downshift Cable With A New Cable(Old Cable Was Frayed & Falling Apart).Finished Job All Was Well Shifted Nice,No Codes,Fluid Level...		 View
1995 Chevrolet Suburban 6.5L Stall
Inspect veh for dying issue. Veh finally died and shut off immediately not fuel starvation either. Ran fault code data and found fault code 17 18 35 and 65. Fault code 17 is high resolution circuit failure and performed the testing on the injection pump and ch... Trouble codes: 0017 (high resolution circuit), 0018 (cam reference pulse), 0035 (injector pulse width short), 0065 (accelerator position 3 sensor range fault).		 View
1995 Chevrolet S10 Pickup 4.3L No Start
This vehicle came to us from a customer that purchased it as is, not running. We found no spark or injector pulse. We replaced the ignition module and then had spark and injector pulse present. The vehicle still does not start. Compression is 130-140 on all cy...		 View
2001 Chevrolet Venture 3.4L coolant temperature gauge
Vehicle came in with an erratic coolant temperature gauge, customer said it went into the red once. Otherwise no signs of overheater or coolant loss, etc. Upon inspection, found coolant low. Pressure tested, no leaks found. Tested for blown head gasket with b...		 View
2002 Chevrolet Venture 3.4L Cooling Systems
Hello to all.I have a new customer who went to dealer with this 3.4l chevrolet and they said it needed a cylinder head job. Brought it to use for second check. It has a definate miss on #1 clinder with about 6250 misfire in history. I have checked cooling syst...		 View
2003 Chevrolet Malibu 3.1L Coolant
This Malibu is getting what appears to be engine oil in the cooling system. It does not appear to be a lot considering that it has been a few months since the flush was done. It is an oily substance that looks like oil. The trans fluid is clean so I don't beli...		 View
2004 Chevrolet Silverado 5.3L ipc odometer
We replaced the instrument cluster for a speedometer issue and it came from the dealer with 0 miles and 0 hours on it. We have a Tech 2 with sps capabilities. Is ther a way for us to program this info into the new cluster without sending over to dealer. Thanks...		 View
2004 Chevrolet Tahoe 5.3L fuel tank
customer complains of refueling problem. when refueling vehicle gas pump shuts off like tank full. tried several gas stations and same results. we dropped gas tank and found no restrictions in vapor lines. we suspect charcoal canister and vent valve problems. ...		 View
2005 Chevrolet Cavalier 2.2L misc. warning lamps
Hello all and thanks in advance for reading this post. I only had a short time to check this car today and customer had to take it back to work. Problem is: ABS, TRAC OFF, SERVICE VEHICLE lamps on intermittently with code C1225 (excessive LF wheel speed variat...		 View
1996 GMC Pickup 4.3L right axle seal
we have replaced the axle seal on right front 7 times on this vehicle seems to last 6 months then starts to leak again . looking for any repair kits or different type of seal or repairs for these front axle leaks have had no luck to date in repair and it is al...		 View
2002 GMC Savana 4.3L 3-2 downshift
hello fellow techs . im having some trouble with a gmc savana 1500 . vehicle keeps setting dtc po785 3-2 downshift solenoid circuit . checked fuse ok . checked voltage on pink wire at transmission pass thru connector . battery voltage . cleared dtc and comesba...		 View
1999 Pontiac Grand Am 2.4L No Start
engine cranks, but will not run. has go0d fuel pressure. no spark, no injector pulse. no rpm reading on scan tool. we cleared trouble codes - none of them returned. security light seems to function normal - comes on with key on and goes out after a few seconds... Trouble codes: U1000C (no state of health from module), P1630C (power control module in theft learn), P1631C (vehicle anti-theft password incorrect), P1632C (atd fuel disabled).		 View
2003 Pontiac Sunfire 2.2L instrument cluster
Car was towed in no start ,cust says stalled all dash lites came on and no start ... checked car battery dead ,but dash lites on with key off and radio plays opening and closing door made no difference ... charged battery now have no dash lites only SES LITE a...		 View
2003 Saturn Vue 3.0L Misfire, MIL Lamp on
Vehicle was towed to me because check engine light was flashing. Scanned computer and found misfire codes for 1, 3, and 5. All of these are on the same bank. Vehicle has over 100,000 miles and has had no maintenance work to it. I removed the Intake and changed... Trouble codes: p0300 (Random Missfire), P0301 (1 Cylinder Miss), P0303 (3 Cylinder Miss), P0305 (5 Cylinder Miss).		 View

Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet Astro 4.3L Hesitation
Let Me Start By Saying Thanks To All Who replied.Last week When I Posted This Help Request I told Customer That I Would Start By replacing Both Knock Sensors,Also From The Looks Of Plugs, Wires,Cap & Rotor,etc. I Would Also Start With Complete Tune Up. He Agre... Trouble codes: 43 (esc module or sensor circuit problem).		 7
1999 Chevrolet S10 Pickup 2.2L guages
well this one beat me. i already have way too much time in it. thanks to all who replied especially dan [...], who went above and beyond trying to help. if they decide to take this somewhere else and it gets fixed i'll let you know what it was. thanks again.		 9
2000 Chevrolet Blazer 4.3L Hesitation, Cuts out, Stall
I finally figured it out after I did the tune up I start going nuts an unpluged the MAF an it stop doing it so IT WAS THE MAF SENSOR. I seen on my scanner the the gm/sec would only go half way on wot the new it would get close and over 100. The day after... Trouble codes: p0173 (lean), p0151 (lean).		 19
2000 Chevrolet Cavalier 2.2L engine temp
we purchased a stant superstat , put in in heated water with the oe stat and a regular aftermarket stat, and compared the opening temp, time to full open and cool off time and the stant superstat gave us the most open time. we then drilled a 1/32 " hole in the...		 7
1995 GMC Pickup 5.7L Poor Fuel Economy
Holy Cow!!! Thanks for ALL of the great input and information to help track down this beast. The ground at the thermostat was checked as suggested by many of you; it was found that there was some resistance between the thermostat factory ground bolt and th...		 25
1999 GMC Sierra 4.3L No Start, Cuts out
first of all thanks to all that replied...this is truck is fixed!!the problem was the white with black tracer to the coil from the icm. it had continuity with an ohm meter but like many that replied was broke enough to not carry the ground nessary to spark the...		 18
2003 GMC Sierra 5.3L front end.
thanks to all who replied, im sorry i was never able to try any of the help because the truck has not yet returned. the help i received suggested everything from leaving factory specs. to keeping caster under 3 degrees, to adding more caster. when and if the t...		 7
1996 Pontiac Sunfire 2.4L radio
Thank you for the responses This was not a twist in bulb but a soldered in one I ended up tking it to a shop and had a bulb installed for 15 dollars Works well now and saved about 100 dollars Again thank you very much 		3
2003 Pontiac Grand Prix 3.8L Electronic
Well this one is fixed. I replaced the TCC solenoid and that fixed the issue. Most replies said to check for a short to ground and look for a pinched wiring harness. I unplugged the TCC solenoid and checked continuity to ground and it was not grounded. Marilyn...		 6
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